- Low power consumption: designed for efficient operation. When the input signal is below 1 V, a 12 V DC supply is sufficient. If the input exceeds 1 V, increase the supply up to a maximum of 24 V to maintain performance. - Easy setup: no software, apps, or drivers required. Plug and play digital audio preamplifier. If you are not fully satisfied, please contact us at any time. - Unity gain with noise reduction: the mini stereo audio preamplifier uses an NE5532 circuit for pre attenuation. When power is off, attenuation is -15 dB. When power is on, NE5532 amplifies and compensates, with a gain of 0 dB. This design helps reduce interference and produces cleaner sound. Input and output levels are effectively the same. - Power supply compatibility: DC supply should be within 12–24 V. It emphasizes low energy consumption and environmental friendliness. - Compact, reliable performance: mini stereo electronic preamplifier intended for transparent, low-noise signal boost in compact form factor and straightforward operation. Use scenarios - Home audio: connect low level sources such as a turntable, DAC, or CD player to a power amplifier or active speaker for cleaner, clearer sound. - Small studio or live setup: use as a transparent preamplifier to preserve signal integrity before recording or mixing. - Vehicle or mobile setup: powered from a 12 V to 24 V DC supply to enhance audio from portable players or car audio systems.